Question

(c) How can rusting of iron articles be preve
(d) Why do ships get damaged in spite of being painted?​

Answer 1

(a)Certain metallic objects develop changes on its surface. Being left stagnant for long or kept unused is the cause for this to happen. This is Corrosion. Corrosion consequently leads to gradual degradation of metals. Rusting is one of the ways of corrosion in metals. It happens to Iron and its Alloys. Iron objects consequently react with the Oxygen in the air and get rusted in a humid environment. Rust is Iron Oxide.

(b) Ships are made of iron and a part of the ship always remain under sea water. The salts present in sea water increase the rate of rusting on ships and hence, ships suffer a lot of damage due to rusting.

Answer 2

Answer:

1. (c) you can colour iron article.
2. (c) you can also cover the article with transparent polythene.
3. (c) always be aware that the article can not have contact with water.

Explanation:

(d) Because ship is always in contact of water and air.

WATER+AIR= RUSTING OF IRON

I Think it will help you.